Special herbicide after emergence of corn seedlings

A herbicide, corn field technology, applied in the directions of herbicides and algaecides, application, biocides, etc., can solve problems such as easy to produce phytotoxicity, and achieve the goal of promoting or inhibiting organ growth, reducing phytotoxicity, and ensuring zero residues. Effect

Inactive Publication Date: 2015-01-07
JINAN DONGZER BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The herbicidal effect and selectivity are the same as simazine, and it is easy to be washed by rainwater to the deeper soil layer. It is also effective for some deep-rooted grasses, but it is easy to cause phytotoxicity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Proportion (wt%): Atrazine 10%, Mesotrione 5%, 2,4-Dichlorophenoxyacetic acid 10%, AEO-38%, Dimethyl phthalate 3%, Xanthan gum 2%, simethicone 0.2%, sodium benzoate 0.2%; the balance is soybean salad oil.

[0030] Preparation:

[0031] (1) Pre-crushing and mixing: atrazine, mesotrione, 2,4-dichlorophenoxyacetic acid, AEO-3, dimethyl phthalate, xanthan gum, simethicone, sodium benzoate Stir and mix with soybean salad oil evenly, add to a high shear disperser for shear dispersion, and control the average particle size to 3 μm;

[0032] (2) Superfine grinding: the material cut in the above step (1) is subjected to superfine grinding through a sand mill, and the average particle size is controlled to be 0.3 μm.

[0033] Applicable crops: common corn, sweet corn and waxy corn are all safe.

[0034] How to use: 2-8 leaves can be sprayed all over the field. 200 grams per mu of land, use after diluting with water by the second dilution method.

Embodiment 2

[0036] Proportion (wt%): Atrazine 15%, Mesotrione 5%, 2,4-Dichlorophenoxyacetic acid 5%, Surfactant 6%, Dimethyl phthalate 3%, Xanthan Glue 2%, simethicone 0.2%, sodium benzoate 0.2%; the balance is soybean salad oil.

[0037] The preparation method and usage method are the same as in Example 1.

Embodiment 3

[0039] Proportion (wt%): Atrazine 12%, Mesotrione 5%, 2,4-Dichlorophenoxyacetic acid 8%, Surfactant 7%, Dimethyl phthalate 3%, Xanthan Glue 2%, simethicone 0.2%, sodium benzoate 0.2%; the balance is soybean salad oil.

[0040] The preparation method and usage method are the same as in Example 1.

[0041] In Jinan City, Shandong Province, atrazine (20%) single spray, mesotrione (5%) single spray, 2,4-dichlorophenoxyacetic acid (25%) single spray, atrazine and nitrate The spraying of grass ketone compound (5% mesotrione + 20% atrazine) was used as a comparative example, and a field test was carried out. The preparations of comparative examples were all made into oil suspensions according to the method of Example 1. Wherein, the amount of water sprayed and the spraying method in the comparative example are the same as in Example 1, and the control effect (ie weed reduction rate) on weeds is shown in Table 1.

[0042] Table 1 Weed Control Effects of Examples 1-3 and Comparative...

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PUM

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Abstract

The invention discloses a special herbicide after emergence of corn seedlings. The special herbicide is compounded from atrazine, mesotrione and 2, 4-dichlorphenoxyacetic acid. The special herbicide has a good effect on grassy weeds such as barnyard grass, crab grass and green bristlegrass, also has a good controlling effect on broadleaf weeds such as purslane and acalypha australis and cyperaceae weeds such as cyperus rotundus, and is safe to corn.

Description

technical field [0001] The invention relates to a herbicide, especially a special herbicide for post-emergence corn field, and belongs to the technical field of agricultural production. Background technique [0002] Corn is an important food crop and an important source of feed, and it is also the food crop with the highest total output in the world. Corn is also an important industrial raw material, which can be processed into more than 3,000 kinds of industrial products. With the rapid development of my country's corn industry processing, the consumption of corn has increased significantly. Corn likes high temperature and generally matures in summer and autumn. Therefore, in summer and autumn, it is hot and rainy, and weeds in cornfields are common. Amaranth, Cyperus radiata, etc. At present, the herbicides used for post-emergence weeding in corn fields mainly include nicosulfuron, mesotrione, sulcotrione, and atrazine. These herbicides have problems such as weed resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/70A01P13/00A01N41/10A01N39/04
Inventor 林英全马树全
Owner JINAN DONGZER BIO TECH
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